Sci-fi balloons

A solar balloon in the shape of a space shuttle is seen at the Sabaneta Municipality's stadium, southern Medellin, Colombia during the 11th International solar balloon festival. AFP Photo

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A solar balloon in the shape of a caterpillar flies over the Sabaneta Municipality's stadium, Colombia. In this version of the festival, there are about 30 balloons and the theme is science fiction. AFP Photo

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A solar balloon in the shape of a space shuttle flies over the Sabaneta Municipality's stadium, southern Medellin, Colombia. AFP Photo

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A solar balloon in the shape of an alien flies over the Sabaneta Municipality's stadium, southern Medellin, Colombia. AFP Photo

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Solar balloons in the shape of UFOs are seen at the Sabaneta Municipality's stadium, southern Medellin, Colombia. AFP Photo

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A solar balloon in the shape of an alien is seen at the Sabaneta Municipality's stadium, southern Medellin, Colombia. AFP Photo

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A solar balloon in the shape of a pterodactyl is seen at the Sabaneta Municipality's stadium, southern Medellin, Colombia. AFP Photo

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A solar balloon in the shape of a pterodactyl flies over the Sabaneta Municipality's stadium, southern Medellin, Colombia. AFP Photo

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A solar balloon in the shape of a pterodactyl is seen at the Sabaneta Municipality's stadium, Colombia. In this version of the festival, there are about 30 balloons and the theme is science fiction. AFP Photo